Hi everyone, I am refining a protein structure containing a Beryllium Fluoride (BeF3) ligand. I am using Refmac5 in ccp4i. The distances between the Be and the F atoms are slightly longer than what I would expect (1.7A instead of ~1.5A).
Does anyone know how I can fix the distances and restrain the bond lengths for the BeF. Thanks, Yael.